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Mercedes '047 CIS injectors - Opinions?

Hi

I see a number of folk have replaced their standard 0437502012 (928 110 225 00) CIS injectors with the Mercedes 0437502047 injectors.

What effect, if any, has this had on the running of the vehicle?

Any change in performance/fuel economy?

Is it a complete no brainer to use these '047 injectors or is it worth trying to restore the original '012 ones?

I notice that the '047 injector is much shorter than the original, this must have some effect on the inlet tract?

Johnb
'82 Euro Manual K-Jetronic CIS
Old 05-18-2010, 09:34 AM
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Here is a list of topics talking about that. Maybe it will answer or not. Good reading though.

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Old 05-18-2010, 10:05 AM
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Thanks for that, already waded thro' those!

Has anyone been running the '047's for some time and got anything to report back?

I guess most have gone with these as their car was already poorly, so a change to new '047's is going to make a dramatic difference anyway.

Just interested to know whether there are any down sides to using these merc injectors?

Johnb
Old 05-18-2010, 10:14 AM
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I've had the MB injectors for about 6 months, pleased with the results.

Never came across anything positive as far as having the steel injectors cleaned, plus the cost associated with that was almost in line with the price of the new MB injectors iirc.

The old injectors where bad, so obvious improvement with the MB's in my case.... can't make apples to apples comparison as far as performance and economy.
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1979 928 5 spd
Old 05-18-2010, 01:18 PM
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look at it this way, their half the price of the porsche units, and the performance is just as good...its a no brainer...lol,...i have read good and bad about having the old injectors cleaned and restored...i went with the MB units in my 78...car ran like a champ...(sold to a buyer in Germany )...it was way quicker than my 82!!....john
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1978 Porsche 928 5sp LSD
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Old 05-18-2010, 08:22 PM
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I have had them in my 82 euro motor for ovre a year...They work great, no issues.
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Old 05-26-2010, 06:22 PM
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I'm dying to install these MB injectors.
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1982 Porsche 928, Auto, 4.5
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Old 05-26-2010, 10:30 PM
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